How Should Penis Foreskin Swelling, Pain With Pimples Be Treated?

sir i am abdul,male and i am 21 years old,from the past one months onwards i have been suffering from a problem which i can feel my self bad. my English so poor sir so please dont miss under stand me i do apology to ask this query. sir my cock is circumcise on that circumcise skin i was found that a small length of one nerve is be puffed up(to rise up) and also getting lightly pain at that place pain means not exactly but like burning,and i am getting pimples just below edge of my cock onr by are coming . i hope u will understand what i asked exactly i will wait for your answer/sir till now i dont have any sexual affairs with others but i use to get self satisfaction by my hand while bathing . thanks to u sir i will wait for ur answer